Apparatus and method for control of asynchronous program interrupt events in a data processing system
CA 1302582 C · Owner: Witek, Richard T. · Inventors: Witek, Richard T.; Cutler, David N.; Cardoza, Wayne
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
In a data processing system having a kernel mode (i.e. for executing privileged instructions) and a user mode of operation, apparatus for responding to interrupt conditions includes a first register subject to the control of the currently executing program for enabling the generation of a mode-related interrupt signal and includes a second register for indicating the presence of a pending mode-related interrupt condition and a third register for requesting a mode-related interrupt be entered in the second register. The mode of operation and the enable and pending interrupt condition registers are monitored and when the signals in the two registers have the appropriate relationship, an …
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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Granted June 2, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 2, 2009.
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Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.